A 35mm roll film negative. On board the Rothesay class type 12 frigate Rhyl (1959) in Devonport Dockyard. In the mortar metadyne room on 3 deck between 65 and 67 stations. The photographer is looking aft and to starboard showing and amplifier assembly cabinet and a control panel on the starboard bulkhead. On the aft bulkhead are gun direction junction box 6 with A/S mortar control junction box 7 above it. The photograph was taken prior to 9 May 1972.